Mud recovery system

Abstract

To provide a mud recovery system capable of recovering mud accumulated underfloor with a simple structure.SOLUTION: A mud recovery system S includes: a mud recovery head 1 for recovering mud accumulated underfloor; a mud recovery container 20 that is connected to the mud recovery head via a first hose 10 and recovers the mud; a discharge pump 30 that is provided within each mud recovery container and discharges the mud; a first mud detection unit 35 and a second mud detection unit 36 disposed at different height positions; a suction device 60 connected to the mud recovery container via a second hose 40; and a mud recovery box 70 that is connected to the discharge pump via a third hose 50 and recovers the mud. The mud recovery container 20 is disposed at a position near the subfloor. The suction device 60 performs a suction operation to make the mud recovery container 20 recover mud accumulated underfloor. The discharge pump 30 performs a discharge operation to make the mud recovery box 70 recover the mud recovered by the mud recovery container 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mud recovery system, and more particularly to a mud recovery system used to recover mud that has accumulated under the floor of a building. [Background technology]

[0002] In the past, flooding caused by typhoons and heavy rains has led to flooding under and above the floor of buildings such as houses. River water and rainwater that seeps under the floor contains fine particles of mud from nearby areas, making it necessary to remove the mud (muddy water) that has accumulated under the floor, but this work is very hard work. Therefore, a mud recovery system is known that uses a suction device such as a vacuum cleaner to recover mud that has accumulated under the floor of a building.

[0003] Specifically, the mud recovery system involves installing a suction device (the main body of the suction device) and a large mud recovery box outside the building, connected by a hose. The hose is then extended from the outside of the building to under the floor inside the building, and the mud recovery head at the end of the hose is operated to suck up the mud that has accumulated under the floor. The sucked-up mud is then collected in the mud recovery box. For example, Patent Documents 1 and 2 propose a sludge recovery device for recovering sludge that has accumulated in a predetermined area, although it is not used to recover mud that has accumulated under the floor of a building. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-125754 [Patent Document 2] Japanese Patent Application Publication No. 2023-179332 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in mud recovery systems used to recover mud accumulated under building floors, it was difficult to install large suction devices and mud recovery containers near the building. Installing the suction device and mud recovery containers far from the building required long hoses, which could make handling the hoses cumbersome. In addition, when sucking up and recovering mud accumulated under building floors, the suction power of the suction device had to be set high, making it difficult to use ordinary suction devices. For this reason, there has been a demand for technology that can collect mud accumulated under the floor with a simpler configuration than conventional technology.For example, there has been a demand for technology that can suck up mud from under the floor and collect it in a mud collection container even when using a relatively small suction device (vacuum cleaner).

[0006] In addition, there was a need for technology that could efficiently collect mud by performing the suction operation of the suction device and the discharge operation of the discharge pump based on the amount of mud collected in the mud collection container.

[0007] An object of the present invention is to provide a mud recovery system that is capable of recovering mud accumulated under a floor with a simple configuration. Another object of the present invention is to provide a mud recovery system that can efficiently recover mud by performing the suction operation of the suction device and the discharge operation of the discharge pump based on the amount of mud recovered in the mud recovery container. [Means for solving the problem]

[0008] The above problem is solved by the mud recovery system of the present invention, which is used when recovering mud accumulated under the floor of a building, and includes a mud recovery head for recovering the mud accumulated under the floor, a mud recovery container connected to the mud recovery head through a first hose and for collecting the mud inside, a suction device connected to the mud recovery container through a second hose, a discharge pump provided in the mud recovery container for discharging the mud recovered in the mud recovery container, and a discharge pump provided in the mud recovery container, each of which is arranged at a different height position, and which detects when the amount of mud recovered in the mud recovery container reaches a predetermined amount or exceeds a predetermined amount. The problem is solved by comprising a first mud detection unit and a second mud detection unit that detect mud, and a mud recovery box that is connected to the discharge pump via a third hose, is larger than the mud recovery container, and collects the mud inside, the mud recovery container being positioned closer to the underfloor than the mud recovery box, the suction device performing a suction operation to recover the mud that has accumulated under the floor into the mud recovery container through the mud recovery head and the first hose, and the discharge pump performing a discharge operation to recover the mud that has been collected in the mud recovery container into the mud recovery box through the third hose.

[0009] With the above configuration, it is possible to realize a mud collection container that can collect mud accumulated under the floor with a simpler configuration than conventional ones. More specifically, the mud collection container is positioned closer to the underfloor area than the mud collection box. This allows for simpler hose routing than conventional systems (the length of each hose can be shortened). Also, when pumping mud from under the floor, the suction force of the suction device can be set to be small. For example, a small suction device can be used. This allows for a mud collection system with a simple configuration. In addition, a discharge pump is provided in the mud recovery box and performs a discharge operation to discharge the mud collected in the mud recovery container back into the mud recovery box. Therefore, the suction operation of the suction device transfers the mud accumulated under the floor to the mud recovery container, and the discharge operation of the discharge pump transfers the mud collected in the mud recovery container to the mud recovery box. In this way, even if the suction force of the suction device is reduced, the mud can be suitably collected in the mud recovery box. Furthermore, by providing the first and second mud detectors, the suction device and discharge pump can be turned on and off based on the detection results of these mud detectors, allowing for efficient mud recovery.

[0010] In this case, the suction device and the mud collection box are preferably placed outside the building, the mud collection container is placed inside the building to temporarily collect the mud, and the discharge pump is preferably placed inside the mud collection container. As described above, by placing the mud collection container indoors, the length of the hose can be shortened, and the suction force of the suction device can be set to a smaller value. For example, if the mud collection container is installed indoors under the floor, the lift (suction lift) can be lowered when sucking mud accumulated under the floor into the mud collection container. This allows the mud to be suitably collected in the mud collection container even when the suction force of the suction device is set to a smaller value.

[0011] In this case, the suction device is connected to the upper part of the mud recovery container through the second hose and performs suction operation to discharge air inside the mud recovery container, the discharge pump has a pump suction port that sucks in mud recovered into the mud recovery container and is arranged in the lower part of the mud recovery container, the first mud detection unit is arranged at the same height as the pump suction port or at a position lower than the pump suction port, and the second mud detection unit is arranged at a position higher than the pump suction port. As described above, by using the first mud detection unit and the second mud detection unit at different height positions, the suction operation of the suction device and the discharge operation of the discharge pump can be performed based on the amount of mud collected in the mud collection container, allowing the mud to be collected efficiently.

[0012] In this case, a control unit is provided that controls the suction operation of the suction device and the discharge operation of the discharge pump based on the detection results by the first mud detection unit and the second mud detection unit, and the control unit controls the operation of the suction device and the discharge pump when it determines that a predetermined amount of mud has been recovered in the mud recovery container by the first mud detection unit and the second mud detection unit. With the above configuration, the suction operation of the suction device and the discharge operation of the discharge pump can be controlled based on the amount of mud collected in the mud collection container, making it possible to collect mud more efficiently.

[0013] In this case, when both the first mud detection unit and the second mud detection unit detect that a predetermined amount of mud has been collected in the mud collection container, the control unit performs a first control to operate the suction device and the discharge pump, and when the second mud detection unit no longer detects that a predetermined amount of mud has been collected in the mud collection container while performing the first control, the control unit performs a second control to stop the operation of the suction device and continue operating the discharge pump. With the above configuration, even after the operation of the suction device has been stopped, the discharge pump can continue to operate to discharge the mud accumulated in the mud recovery container.

[0014] At this time, the control unit performs a third control to stop operation of the discharge pump when the first mud detection unit no longer detects that a predetermined amount of mud has been collected in the mud collection container while performing the second control, as described in the mud recovery system of claim 5. With the above configuration, after it is detected that no mud has accumulated (or almost no mud has accumulated) in the mud recovery container, control can be performed to stop the operation of the discharge pump. [Effects of the Invention]

[0015] According to the mud recovery system of the present invention, it is possible to recover mud accumulated under the floor with a simple configuration. Furthermore, the suction operation of the suction device and the discharge operation of the discharge pump are performed based on the amount of mud collected in the mud collection container, making it possible to collect the mud efficiently. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a configuration diagram of a mud recovery system according to an embodiment of the present invention. [Figure 2] FIG. 2 is an explanatory diagram of the mud recovery container, the first hose, the second hose, and the third hose, showing the state in which the mud recovery system is performing suction and discharge operations. [Figure 3] FIG. 2 is a diagram illustrating a hardware configuration of the mud recovery system. [Figure 4] FIG. 2 is a diagram illustrating mud recovery control by the mud recovery system. [Figure 5] FIG. 5 is a continuation of FIG. 4 and is a diagram illustrating the first control and the second control by the mud recovery system. [Figure 6] FIG. 6 is a continuation of FIG. 5 and is a diagram illustrating a third control by the mud recovery system. [Figure 7] FIG. 1 is a process flow diagram showing a mud recovery method using a mud recovery system. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. This embodiment relates to a "mud recovery system" that is used when recovering mud that has accumulated under the floor of a building, making it easier to handle hoses and enabling the mud that has accumulated under the floor to be recovered in an efficient manner.

[0018] <Mud recovery system> As shown in Figure 1, the mud recovery system S is used when flooding occurs due to a typhoon or heavy rain, causing water to flood under or above the floor of a building B, such as a house. More specifically, the mud recovery system S is used to efficiently recover mud M (which may be muddy water) that has accumulated in the underfloor B2 (underfloor space) located below the floor B1 of the building B. "Flooding above floor level" refers to a situation in which the water level of a building (home) is above the floor level and exceeds 45cm above ground level. "Flooding below floor level" refers to a situation in which the water level of the building's foundation is submerged and the water level is no higher than 45cm above ground level. For example, by law, the height of a building's floor must be at least 45cm from the ground directly below it to the top of the floor.

[0019] Specifically, as shown in Figures 1 and 2, the mud recovery system S comprises a mud recovery head 1, a first hose 10, a mud recovery container 20, a discharge pump 30, and mud detection sensors 35 and 36 installed under the floor B2 of building B, a second hose 40 and a third hose 50 extending from under the floor B2 of building B to the outdoors, a suction device 60, a mud recovery box 70, and a generator 80 installed outside building B, and an information processing device 100 operated indoors or outdoors of building B. It is equipped with: The discharge pump 30, the first mud detection sensor 35, and the second mud detection sensor 36 are arranged inside the mud recovery container 20.

[0020] As shown in Figure 1, the mud recovery head 1 is a hollow head member that is connected to the tip of the first hose 10 and sucks up mud M that has accumulated under the floor B2 in conjunction with the suction operation of the suction device 60. Specifically, the mud recovery head 1 has a hollow head main body 2, a head port 3 provided at the tip of the head main body, and a hose connection part 4 provided at the end of the head main body and connected to the first hose.

[0021] As shown in FIGS. 1 and 2, the first hose 10, the second hose 40, and the third hose 50 are transfer hoses (transfer pipes) for transferring air and mud M (muddy water). The first hose 10 is a hose that is mainly used to pass mud M accumulated under the floor B2, and connects the mud recovery head 1 and the mud recovery container 20. The second hose 40 is a hose that mainly discharges air from inside the mud recovery container 20 and connects the mud recovery container 20 to the suction device 60 . The third hose 50 is a hose that mainly passes the mud M temporarily collected in the mud collection container 20 to the mud collection box 70, and connects the mud collection container 20 (discharge pump 30) and the mud collection box 70. As shown in Fig. 1, the first hose 10 extends along an underfloor B2 of a building B. The second hose 40 and the third hose 50 extend from the underfloor B2 through an underfloor opening B3 and from the inside of the building B to the outside.

[0022] The mud recovery system S (information processing device 100) uses multiple mud detection sensors 35, 36 to control the suction operation of the suction device 60 and the discharge operation of the discharge pump 30. This control prevents negative pressure from forming inside the mud recovery container 20. In other words, the suction operation and the discharge operation can be performed simultaneously. This eliminates the need to attach a check valve (non-return valve) to the hoses 10, 40, 50 to prevent backflow of the mud M, for example. In other words, the check valve can be eliminated. Note that a check valve may be attached to the hoses 10, 40, 50 to more reliably prevent backflow of the mud M.

[0023] 1 and 2, the mud collection container 20 is a box-shaped container (sealed container) that is sized to be able to be installed under the floor B2 of the building B. For example, it is about 30 to 50 cm high so that it can fit under the floor B2, and about 40 to 60 cm long and 40 to 60 cm wide so that it can pass through the underfloor opening B3. The mud collection container 20 can collect mud M inside by having the suction action of the suction device 60 expel air from inside the container body 21 through the second hose 40 and sucking mud M through the first hose 10.

[0024] The mud collection container 20 has a container body 21 for collecting mud M, a lid portion 22 that covers the container body 21 from above, a first hose connection portion 23 that is connected to the first hose 10, a second hose connection portion 24 that is connected to the second hose 40, and a third hose connection portion 25 that is connected to the third hose 50. Inside the mud collection container 20, there are installed a discharge pump 30 that discharges the mud collected in the container body 21, and a first mud detection sensor 35 and a second mud detection sensor 36 that detect when the amount of mud M collected in the container body 21 has reached a predetermined amount or more.

[0025] The mud recovery container 20 temporarily recovers the mud M inside while the inside of the container body 21 is brought into a vacuum state (low vacuum state) by the suction operation of the suction device 60. The first hose connection portion 23 is attached to the upper portion of the side of the container body 21. The second hose connection part 24 is attached to the upper part of the side part of the container body 21 in order to suitably discharge air from inside the container body 21. The second hose connection part 24 may also be attached to the top part of the container body 21 (lid part 22). The third hose connection part 25 is attached to the lower part of the side part of the container body 21 in order to expel the mud M accumulated in the container body 21 in an appropriate manner.

[0026] As shown in Figures 1 and 2, the discharge pump 30 is a small pump that is installed at the bottom inside the mud recovery container 20. The discharge pump 30 operates to discharge the mud M recovered in the mud recovery container 20 into the mud recovery box 70 through the third hose 50. The discharge pump 30 has a pump body 31, a pump suction port 32 provided on the pump body 31 for sucking in mud M, and a pump discharge port 33 for discharging mud M. The discharge pump 30 operates (starts operation) under the control of the information processing device 100, and discharges the mud M collected in the mud collection container 20. Also, the operation is stopped under the control of the information processing device 100. The discharge pump 30 may be started and stopped manually by an operator. For example, the operator may operate the discharge pump 30 based on (after confirming) the detection results of the mud detection sensors 35, 36.

[0027] 2, the mud detection sensors 35, 36 are mud detection units that detect when the amount of mud M collected in the mud collection container 20 has reached a predetermined amount or is greater than a predetermined amount, and are, for example, float sensors (also called float switches or level sensors). Note that the mud detection sensors 35, 36 may be detectors (detection units) other than float sensors. The mud detection sensors 35, 36 are connected to the information processing device 100 via communication, and detect when the collected amount of mud M reaches a predetermined amount (a predetermined amount or more), and transmit a detection signal to the information processing device 100.

[0028] The first mud detection sensor 35 is attached to the bottom inside the mud recovery container 20 and is positioned at the same height as the pump suction port 32 (approximately the same height as the pump suction port 32) or slightly below the pump suction port 32. The second mud detection sensor 36 is attached to the side of the upper part of the discharge pump 30, and is positioned higher than the first mud detection sensor 35 and higher than the pump suction port 32. The second mud detection sensor 36 may be attached to the side of the interior of the mud recovery container 20.

[0029] As shown in FIG. 1, the suction device 60 is also called a vacuum device, and is a device that receives electricity from a generator 80 to perform suction operations. The suction device 60 performs a suction operation to recover the mud M accumulated under the floor B2 through the mud recovery head 1 and the first hose 10 into the mud recovery container 20. The suction device 60 is turned on and off manually or under the control of the information processing device 100, and the set value of the suction pressure (vacuum pressure) is also controlled.

[0030] As shown in FIG. 1, the mud collection box 70 is formed larger than the mud collection container 20, and is used to collect the mud M therein, and is, for example, a mud collection box such as a drum can. The mud recovery container 20 temporarily recovers the mud M, and the mud recovery box 70 transfers the mud M from the mud recovery container 20 and recovers it. The mud collection box 70 has a box body 71, a lid portion 72, and a third hose connection portion 73 that is connected to the third hose 50. The mud collection box 70 may further include a bag-shaped sandbag for collecting the mud M.

[0031] The generator 80 is a device that generates electricity by, for example, electromagnetic induction and supplies the electricity to the suction device 60 . The generator 80 is installed outside the building B together with the suction device 60 .

[0032] In the above configuration, as shown in Fig. 1, in the mud recovery system S, a small mud recovery container 20 is installed under the floor B2 of the building B. Therefore, the length of the hose can be made shorter than in the past (the length of each hose can be shortened by using multiple hoses), making the hose easier to handle. In other words, it is possible to avoid the hose becoming heavy due to the weight of the mud being added when a single hose becomes longer. Furthermore, by providing the mud collection container 20 and the mud collection box 70, the lifting height (suction lifting height) can be reduced when sucking the mud M accumulated under the floor B2 into the mud collection container 20 (mud collection box 70). Therefore, even if the suction power of the suction device 60 is set low, the mud M can be suitably collected. For example, it is possible to use a home suction device (100V voltage specification) instead of a commercial suction device (200V voltage specification).

[0033] In the mud recovery system S, mud accumulated under the floor can be efficiently recovered by manual operation by an operator. In addition, by using the mud detection sensors 35, 36 and the information processing device 100 to control the operation of the suction device 60 and the discharge pump 30, mud accumulated under the floor can be recovered more efficiently. This will be explained in detail below.

[0034] <Control by information processing device> As shown in Figures 1 and 3, the information processing device 100 is a computer having a CPU (processor), a memory device (ROM, RAM, HDD), and a communication interface (communication IF), and is connected to the discharge pump 30, mud detection sensors 35, 36, and suction device 60 so as to be able to communicate with them. The information processing device 100 controls the discharge operation of the discharge pump 30 and the suction operation of the suction device 60 based on the detection results of the mud detection sensors 35 and 36. The information processing device 100 may be operated by a worker inside the building B or outside the building B.

[0035] From the functional standpoint, the information processing device 100 mainly comprises a storage unit 101 for temporarily storing various programs and various data, a communication unit 102, a determination unit 103, and an operation control unit 104 (control unit), which are configured by a CPU (processor), a ROM, a RAM, a HDD, a communication IF, various programs, etc.

[0036] The information processing device 100 (determining unit 103, operation control unit 104) controls the discharge pump 30 and the suction device 60 based on the detection results of the mud detection sensors 35 and 36, as shown in FIGS. Specifically, it is as follows:

[0037] 4, the operation control unit 104 first controls the suction device 60 to perform a suction operation. It is preferable that the operation control unit 104 first receives an operation instruction from the operator and controls the suction device 60 to operate. Alternatively, the operator may turn on the operation of the suction device. The left side of Figure 4 shows a state in which the discharge pump 30 and suction device 60 are not operating (operation OFF state). It also shows a state in which the first mud detection sensor 35 and the second mud detection sensor 36 have not yet detected mud (detection OFF state). In other words, no mud has yet been collected inside the mud collection container 20. The right side of Fig. 4 shows a state in which the suction device 60 is operating (operation ON state). It also shows a state in which the first mud detection sensor 35 has detected mud (detection ON state). In other words, the mud recovery container 20 has recovered a predetermined amount (first predetermined amount) or more of mud.

[0038] Then, as shown on the left side of Figure 5, when the judgment unit 103 determines that a predetermined amount (second predetermined amount) or more of mud has been collected in the mud collection container 20 by both the first mud detection sensor 35 and the second mud detection sensor 36, the operation control unit 104 performs "first control" to operate the discharge pump 30 and the suction device 60. The left side of Figure 5 shows a state in which the discharge pump 30 and suction device 60 are operating (operation ON state). It also shows a state in which the first mud detection sensor 35 and the second mud detection sensor 36 have detected mud (detection ON state). In other words, a second predetermined amount of mud has been collected inside the mud collection container 20.

[0039] 5, when the determination unit 103 determines that the second mud detection sensor 36 is not detecting mud (detection OFF state), the operation control unit 104 performs "second control" to stop the operation of the suction device 60 (operation OFF) and continue to operate the discharge pump 30. Note that the operator may also stop the operation of the suction device 60. The state on the right side of Figure 5 shows a state in which only the discharge pump 30 is operating (operation ON state). It also shows a state in which the first mud detection sensor 35 has detected mud (detection ON state), and a state in which the second mud detection sensor 36 has not detected mud (detection OFF state). In other words, the state is one in which more than a first predetermined amount but less than a second predetermined amount of mud has been collected inside the mud collection container 20.

[0040] Then, as shown in Figure 6, when the judgment unit 103 determines that the first mud detection sensor 35 is not detecting mud (detection OFF state), the operation control unit 104 performs "third control" to stop the discharge pump 30 from operating. 6 shows a state in which the discharge pump 30 and the suction device 60 are not operating (operation OFF state). It also shows a state in which the first mud detection sensor 35 and the second mud detection sensor 36 are not detecting mud (detection OFF state). In other words, there is no mud (almost no mud) remaining inside the mud recovery container 20.

[0041] By the above control, as shown in Figure 5, even after the operation of the suction device 60 has been stopped, the discharge pump 30 can be continuously operated to discharge the mud accumulated in the mud recovery container 20. Furthermore, as shown in Figure 6, after it is detected that no mud has accumulated (or that there is almost no mud accumulated) in the mud recovery container 20, the discharge pump 30 can be controlled to stop operating. A more specific control method is as shown in the processing flow in FIG.

[0042] <Mud recovery control by information processing device (mud recovery method)> Next, the processing of mud recovery control (mud recovery control program) by the mud recovery system S will be described with reference to FIG. The program is executed upon receiving an operation instruction from the operator, and is repeatedly executed until a stop instruction is received from the operator. In the above program, the operation of the suction device 60 is started (operation ON) and stopped (operation OFF) by the operator's operation instructions. First, the program starts from a state in which mud has accumulated under the floor and the operator has started the operation of the suction device 60.

[0043] The process flow shown in FIG. 7 starts with step 1 (S1) in which the information processing device 100 (determination unit 103) determines whether the suction device 60 is operating (whether operation is ON). If it is determined that the suction device 60 is in operation ON (Step 1: Yes), proceed directly to Step 2. On the other hand, if it is determined that the suction device 60 is not in operation OFF (Step 1: No), proceed to Step 5. In this case, you will naturally proceed to step 2.

[0044] In step 2, the determination unit 103 determines whether a predetermined amount (second predetermined amount) of mud has been recovered in the mud recovery container 20 by the ON / OFF state of the second mud detection sensor . If it is determined that the second mud detection sensor 36 is ON (the second predetermined amount of mud has been collected) (Step 2: Yes), the process proceeds to Step 3. In step 3, the operation control unit 104 controls the operation of the discharge pump 30 to be ON. Then, the process flow proceeds to END (strictly speaking, the process returns to step 1). This means that it has been detected that a considerable amount of mud has accumulated in the mud recovery container 20, the suction device 60 continues its suction operation, and the discharge pump 30 has started its discharge operation.

[0045] On the other hand, if it is not determined that the second mud detection sensor is ON (the second predetermined amount of mud has not been collected) (Step 2: No), the process proceeds to Step 4. In step 4, the operation control unit 104 controls the operation of the discharge pump 30 to be turned off. Then, the process flow proceeds to END (strictly speaking, the process returns to step 1). This means that it has been detected that there is no significant amount of mud accumulated in the mud recovery container 20, and the suction device 60 continues its suction operation, but the discharge pump 30 has stopped its discharge operation. If mud accumulates again in the mud recovery container 20 when this processing flow is repeated, the process proceeds to step 3, where the discharge pump 30 starts the discharge operation again.

[0046] As the above processing flow is repeated, the mud accumulated under the floor is collected. When the collection of the mud accumulated under the floor is completed, the worker stops the operation of the suction device 60. Starting from this state, the process proceeds to step 5. In step 5, the determination unit 103 determines whether the discharge pump 30 is operating (operation ON). If it is determined in step 5 that the discharge pump is in operation ON (Yes), the process proceeds to step 6.

[0047] In step 6, the determination unit 103 determines whether a predetermined amount (first predetermined amount) of mud has been recovered in the mud recovery container 20 by the ON / OFF state of the first mud detection sensor 35. If it is determined that the first mud detection sensor is ON (the first predetermined amount of mud has been collected) (Step 6: Yes), the process proceeds to END (strictly speaking, the process returns to Step 1). This means that mud is still accumulated in the mud collection container 20, the suction device 60 is stopped, but the discharge pump 30 continues to discharge.

[0048] If it is not determined in step 6 that the first mud detection sensor 35 is ON (the first predetermined amount of mud has not been collected) (step 6: No), the process proceeds to step 7. In step 7, the operation control unit 104 controls the discharge pump 30 to turn off its operation, and then the process flow proceeds to END. This means that there is (almost) no mud accumulated in the mud recovery container 20, and the discharge pump 30 as well as the suction device 60 have stopped operating.

[0049] Also, if it is determined in step 5 that the discharge pump is in operation OFF (step 5: No), the process flow proceeds to END. This means that there is (almost) no mud accumulated in the mud recovery container 20, and the suction device 60 and discharge pump 30 are not operating.

[0050] With the above-mentioned mud recovery system S (mud recovery method using the mud recovery system S), the suction operation of the suction device 60 and the discharge operation of the discharge pump 30 are performed based on the amount of mud recovered in the mud recovery container 20, allowing the mud to be recovered efficiently.

[0051] <Other embodiments> In the above embodiment, as shown in Fig. 1, the mud collection container 20 is installed under the floor B2 of the building B, but this is not particularly limited and it may be installed on the floor inside the building B. In other words, the mud collection container 20 may be installed in a position closer to the under floor B2 than the mud collection box 70.

[0052] In the above embodiment, as shown in Fig. 1, the mud recovery system S is equipped with the information processing device 100, but is not particularly limited, and may not be equipped with the information processing device 100. In other words, an operator may manually operate the discharge operation of the discharge pump 30 and the suction operation of the suction device 60.

[0053] In the above embodiment, the mud recovery system according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof. In particular, the above-described embodiments are merely examples and do not limit the present invention. [Explanation of symbols]

[0054] S Mud Recovery System 1 Mud recovery head 2 Head body 3 Head opening 4 Hose connection 10 First hose (first hose) 20 Mud collection container 21 Container body 22 Lid 23 First hose connection 24 Second hose connection 25 Third hose connection 30 Discharge Pump 31 Pump body 32 Pump suction port 33 Pump outlet 35 First mud detection sensor (first mud detection section) 36 Second mud detection sensor (second mud detection section) 40 Second Hose (Second Hose) 50 Third Hose (Third Hose) 60 Suction device 70 Mud Collection Box 71 Box body 72 Lid 73 Third hose connection 80 Generator 100 Information processing device 101 Storage section 102 Communications Department 103 Judgment Department 104 Operation control unit (control unit) Building B B1 floor B2 Underfloor (underfloor space) B3 Underfloor Entrance M mud

Claims

1. A mud recovery system used to recover mud accumulated under the floor of a building, a mud recovery head for recovering mud accumulated under the floor; a mud recovery container connected to the mud recovery head through a first hose and configured to collect mud therein; a suction device connected to the mud recovery container through a second hose; A discharge pump provided in the mud recovery container for discharging the mud recovered in the mud recovery container; A first mud detection unit and a second mud detection unit are provided in the mud recovery container, each arranged at a different height position, and detect that the amount of mud recovered in the mud recovery container has reached a predetermined amount or is greater than or equal to a predetermined amount; a mud collection box connected to the discharge pump through a third hose, formed larger than the mud collection container, and configured to collect mud therein; The mud collection container is disposed at a position closer to the underfloor than the mud collection box, The suction device performs a suction operation to recover mud accumulated under the floor through the mud recovery head and the first hose into the mud recovery container, A mud recovery system characterized in that the discharge pump discharges the mud recovered in the mud recovery container through the third hose and into the mud recovery box.

2. The suction device and the mud collection box are disposed outside the building, The mud collection container is placed indoors in the building and temporarily collects mud, The mud recovery system of claim 1 , wherein the discharge pump is disposed inside the mud recovery vessel.

3. the suction device is connected to the upper part of the mud recovery container through the second hose and performs suction to discharge air from the inside of the mud recovery container; The discharge pump has a pump suction port for sucking the mud collected in the mud collection container, and is disposed in a lower portion of the mud collection container; The first mud detection unit is arranged at the same height as the pump suction port or at a position lower than the pump suction port, The mud recovery system according to claim 1 or 2, wherein the second mud detection unit is disposed at a position above the pump suction port.

4. A control unit is provided which controls the suction operation of the suction device and the discharge operation of the discharge pump based on the detection results by the first mud detection unit and the second mud detection unit, The mud recovery system described in claim 3, characterized in that the control unit controls the operation of the suction device and the discharge pump when the first mud detection unit and the second mud detection unit determine that a predetermined amount of mud has been recovered in the mud recovery container.

5. The control unit When both the first mud detection unit and the second mud detection unit detect that a predetermined amount of mud has been collected in the mud collection container, a first control is performed to operate the suction device and the discharge pump, The mud recovery system described in claim 4, characterized in that if the second mud detection unit no longer detects that a predetermined amount of mud has been recovered in the mud recovery container while the first control is being performed, a second control is performed to stop the suction device and continue operating the discharge pump.

6. The mud recovery system described in claim 5, characterized in that the control unit performs a third control to stop operation of the discharge pump when the first mud detection unit no longer detects that a predetermined amount of mud has been recovered in the mud recovery container while performing the second control.

Images